In the "Project Explorer" view, right-click the TV application project and select "Debug As > Tizen Web Application".
The Tizen Studio launches the TV application project on the connected emulator or TV and then a DevTools window opens.

Figure 1. DevTools Window

Navigate to the "Sources" tab and select "Page" tab on the left hand side of the window so that the page tree is visible.
You should see a wasm folder among others in the tree (see Figure 1).

Note

If you cannot see the folder, press F5 to reload the page.

Unfold the tree and you will notice that there are other folders - one per each WebAssembly module on the page. The folders may again be unfolded and there should be a bunch of source files visible.
There is one source file per each WebAssembly function in your module.

Note

In Tizen 5.5 TV application projects the source is visible as WebAssembly bytecode.

You can set breakpoints, watch expressions and do other typical debug activities.
For example, to set a new breakpoint just click the line number of the currently displayed code, where the breakpoint is to be set.
Now, when you reload the page, the WebAssembly execution will pause on the set breakpoint.